Characterization of CH3CH2NH3SnI3/TiO2 Heterojunction

Abstract

In this chapter, CH3CH2NH3SnI3/TiO2 heterojunction lead-free perovskite solar cell (HLFPSCs) is produced by the deposition of perovskite nanoparticles from a solution of CH3CH2NH3I and SnI3 in γ-hydroxyl butyric acid lactone on a 400 nm nanolayers of TiO2 showing (001) planes. The CH3CH2NH3SnI3 /TiO2 HLFSCs shows remarkable PV performance, with Jsc= 17.05 mA/cm2, Voc = 0.71 V, and FF = 0.61; resultant PCE of 6.5% in standard AM 1.5 G one-sun light intensity and PCE of 7.5% in lower light intensity was reported in this work. The beginning of such a simple solution treated HLFPSCs paves the way to appreciate low-cost, high-efficiency LFPSCs.